Physics 1135 (Engineering Physics I)

Lecture 18: Linear Momentum and energy

Objectives: In this lecture, students will learn to
  • analyze elastic collisions
  • apply conservation of linear momentum and conservation of energy to multi-step problems
  • define center of mass
  • relate center of mass motion to external forces
  • formulate the principal mechanism of rocket propulsion as an example of momentum conservation
Lecture Notes: Videos:

Introduction Video_1.mp4
Energy and momentum - multi-step problems Video_2.mp4 with captions
Elastic collisions Video_3.mp4 with captions
Newton's cradle
Rosencrantz and Guildenstern are dead
Video
Center of mass - definition Video_4.mp4 with captions
Center of mass motion Video_5.mp4 with captions
Demo: Rocket Tricycle
rocketcart.mp4
Demo: Drop and elastic collision of two balls - see homework
Video_6.mp4

Homework assignment: HW #18